{"id":"https://openalex.org/W2000402667","doi":"https://doi.org/10.1109/vetecs.2012.6240030","title":"Channel Estimation for OFDM Systems over Time-Varying and Sparse Dispersive Channels","display_name":"Channel Estimation for OFDM Systems over Time-Varying and Sparse Dispersive Channels","publication_year":2012,"publication_date":"2012-05-01","ids":{"openalex":"https://openalex.org/W2000402667","doi":"https://doi.org/10.1109/vetecs.2012.6240030","mag":"2000402667"},"language":"en","primary_location":{"id":"doi:10.1109/vetecs.2012.6240030","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vetecs.2012.6240030","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102187886","display_name":"Qilin Guo","orcid":null},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Qilin Guo","raw_affiliation_strings":["Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China"],"affiliations":[{"raw_affiliation_string":"Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003011685","display_name":"Muqing Wu","orcid":"https://orcid.org/0000-0002-9653-4677"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Muqing Wu","raw_affiliation_strings":["Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China"],"affiliations":[{"raw_affiliation_string":"Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023946656","display_name":"Qinjuan Zhang","orcid":null},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qinjuan Zhang","raw_affiliation_strings":["Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China"],"affiliations":[{"raw_affiliation_string":"Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071281403","display_name":"Xiaofang Hao","orcid":null},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiaofang Hao","raw_affiliation_strings":["Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China"],"affiliations":[{"raw_affiliation_string":"Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101148502","display_name":"Yanzhi Sun","orcid":null},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yanzhi Sun","raw_affiliation_strings":["Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China"],"affiliations":[{"raw_affiliation_string":"Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, , China","institution_ids":["https://openalex.org/I139759216"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5102187886"],"corresponding_institution_ids":["https://openalex.org/I139759216"],"apc_list":null,"apc_paid":null,"fwci":0.2455,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.57521365,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":"58","issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10575","display_name":"Wireless Communication Networks Research","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12146","display_name":"Power Line Communications and Noise","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.8408265113830566},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.761606752872467},{"id":"https://openalex.org/keywords/estimator","display_name":"Estimator","score":0.6952663064002991},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.584678590297699},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5573018789291382},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.5521815419197083},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.4413694143295288},{"id":"https://openalex.org/keywords/multiplexing","display_name":"Multiplexing","score":0.42517632246017456},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.39947667717933655},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2893856465816498},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.23857465386390686},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.23289847373962402},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.13570785522460938},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.12297827005386353}],"concepts":[{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.8408265113830566},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.761606752872467},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.6952663064002991},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.584678590297699},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5573018789291382},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.5521815419197083},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.4413694143295288},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.42517632246017456},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.39947667717933655},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2893856465816498},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.23857465386390686},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.23289847373962402},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.13570785522460938},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.12297827005386353},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/vetecs.2012.6240030","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vetecs.2012.6240030","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/11","display_name":"Sustainable cities and communities","score":0.8500000238418579}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W1587218653","https://openalex.org/W1596939795","https://openalex.org/W1996872397","https://openalex.org/W2004615135","https://openalex.org/W2051952673","https://openalex.org/W2111819913","https://openalex.org/W2113141622","https://openalex.org/W2113471222","https://openalex.org/W2114004090","https://openalex.org/W2131132269","https://openalex.org/W2132416373","https://openalex.org/W2137488950","https://openalex.org/W2138824526","https://openalex.org/W2151282433","https://openalex.org/W2157667501","https://openalex.org/W2159309762","https://openalex.org/W6635388271"],"related_works":["https://openalex.org/W2792339401","https://openalex.org/W2530747331","https://openalex.org/W3097525855","https://openalex.org/W2125564215","https://openalex.org/W2517776947","https://openalex.org/W1986382998","https://openalex.org/W2084482193","https://openalex.org/W2063393180","https://openalex.org/W2310122400","https://openalex.org/W4243590696"],"abstract_inverted_index":{"Time-varying":[0],"channel":[1,27,43,51,74,108,127],"gains":[2],"are":[3,69,115,121],"approximated":[4],"by":[5,117],"basis":[6],"expansion":[7],"model":[8],"(BEM)":[9],"to":[10,105],"make":[11],"the":[12,35,65,72,78,86,90,94,101],"tremendous":[13],"unknowns":[14],"estimation":[15,33,44,82],"feasible":[16],"in":[17,34,123],"orthogonal":[18],"frequency":[19,75],"division":[20],"multiplexing":[21],"(OFDM)":[22],"systems.":[23],"However,":[24],"sparse":[25,49,66,106],"dispersive":[26,50,107],"requires":[28],"overloaded":[29],"subcarriers":[30],"for":[31],"pilot-aided":[32],"framework":[36],"of":[37],"BEM.":[38],"This":[39],"paper":[40],"proposes":[41],"a":[42],"scheme":[45],"over":[46],"time-varying":[47],"and":[48,77],"with":[52,71,84,109],"circular":[53],"grouped":[54],"pilot":[55],"pattern,":[56],"which":[57,120],"occupies":[58],"much":[59],"less":[60],"subcarriers.":[61],"In":[62],"this":[63],"scheme,":[64],"tap":[67],"delays":[68],"detected":[70,87],"interpolated":[73],"response":[76],"modified":[79],"BEM":[80],"based":[81],"deals":[83],"only":[85],"taps,":[88],"eliminating":[89],"noise":[91],"interference":[92],"from":[93],"null":[95],"taps.":[96],"The":[97],"proposed":[98],"estimator":[99],"outperforms":[100],"existing":[102],"methods":[103],"applied":[104],"higher":[110],"spectral":[111],"efficiency.":[112],"Our":[113],"claims":[114],"verified":[116],"simulation":[118],"results,":[119],"obtained":[122],"COST207":[124],"typical":[125],"urban":[126],"model.":[128]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}